[stubgenc] Move stubgenc CI test in separate workflow

Author: sizmailov

.github/workflows/test_stubgenc.yml

@@ -0,0 +1,44 @@
+name: Test stubgenc on pybind11-mypy-demo
+
+on:
+  push:
+    branches: [master]
+    tags: ['*']
+  pull_request:
+    paths:
+    - 'mypy/stubgenc.py'
+    - 'mypy/stubdoc.py'
+    - 'test-data/stubgen/**'
+
+jobs:
+  stubgenc:
+    # Check stub file generation for a small pybind11 project
+    # (full text match is required to pass)
+    runs-on: ubuntu-latest
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: initialize submodules
+      run: git submodule update --init
+
+    - name: Setup 🐍 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Prepare env
+      run: |
+        python -m pip install -r test-requirements.txt
+        python -m pip install pybind11 numpy
+        python -m pip install git+https://github.com/sizmailov/python_example.git@pybind11-mypy-demo
+        python -m pip install .
+
+    - name: Run stubgen
+      run: |
+        rm -rf test-data/stubgen/python_example
+        stubgen -p python_example -o test-data/stubgen/
+
+    - name: Check output
+      run: |
+        git diff --exit-code test-data/stubgen/python_example

test-requirements.txt

@@ -14,8 +14,4 @@ typing>=3.5.2; python_version < '3.5'
 py>=1.5.2
 virtualenv<20
 setuptools!=50
-importlib-metadata==0.20
-# stubgen compatibility with pybind
-pybind11
-numpy
-git+https://github.com/sizmailov/python_example.git@mypy-stubgen-test
+importlib-metadata==0.20